Attachment for a hand held appliance

• US 9,282,799 B2
• Filed: 07/03/2013
• Issued: 03/15/2016
• Est. Priority Date: 07/04/2012
• Status: Active Grant

• Current Assignee: Dyson Technology Limited (Beeswax Holdings UK Limited)
• Original Assignee: Dyson Technology Limited (Beeswax Holdings UK Limited)
• Inventors: Courtney, Stephen Benjamin, Moloney, Patrick Joseph William, Shelton, Edward, Follows, Thomas James Dunning, Jones, David Michael
• Primary Examiner(s): GRAVINI, STEPHEN MICHAEL
• Application Number:
  US13/935,146
• Publication Number:
  US 20140007449A1
• Time in Patent Office: 986 Days
• Field of Search: 34/96, 34/97, 34/98, 34/99, 341/00, 392/384, 392/385, D28/13
• US Class Current: 1/1
• CPC Class Codes: A45D 20/00 Hair drying devices; Accessories therefor A45D2/00 takes precedence
• CPC Class Codes: A45D 20/12 Details thereof or accessories therefor, e.g. nozzles, stands
• CPC Class Codes: A45D 20/122 Diffusers, e.g. for variable air flow
• CPC Class Codes: A45D 20/124 comprising rotating elements

Abstract

A hairdryer includes a handle; a body comprising a fluid outlet and a primary fluid outlet; a fan unit for generating fluid flow through the hairdryer, the hairdryer comprising a fluid flow path extending from a fluid inlet through which a fluid flow enters the hairdryer to the fluid outlet, and a primary fluid flow path extending from a primary fluid inlet to the primary fluid outlet; a heater for heating the primary fluid flow drawn through the primary fluid inlet; and a nozzle attachable to the body, the nozzle comprising a nozzle fluid inlet for receiving the primary fluid flow from the primary fluid outlet, and a nozzle fluid outlet for emitting the primary fluid flow, and wherein the nozzle is configured to inhibit the emission of the fluid flow from the fluid outlet.

Claims

1. A hairdryer comprising a handle;

a body comprising a fluid outlet and a primary fluid outlet;

a fan unit for generating fluid flow through the hairdryer, the hairdryer comprising a fluid flow path extending from a fluid inlet through which a fluid flow enters the hairdryer to the fluid outlet, and a primary fluid flow path extending from a primary fluid inlet through which a primary fluid flow enters the hairdryer to the primary fluid outlet, wherein the primary fluid flow path is separate from the fluid flow path;

a heater for heating the primary fluid flow drawn through the primary fluid inlet; and

a nozzle attachable to the body, the nozzle comprising a nozzle fluid inlet for receiving the primary fluid flow from the primary fluid outlet, and a nozzle fluid outlet for emitting the primary fluid flow, and wherein the nozzle is configured to at least partially block the emission of the fluid flow from the fluid outlet.

2. The hairdryer of claim 1, wherein the nozzle is configured to inhibit the generation of the fluid flow.

3. The hairdryer of claim 1, wherein the nozzle comprises a device for inhibiting the flow of fluid along the fluid flow path to the fluid outlet.

4. The hairdryer of claim 3, wherein the device for inhibiting the flow of fluid along the flow path to the fluid outlet comprises a barrier which is located within the fluid flow path when the nozzle is attached to the hairdryer.

5. The hairdryer of claim 4, wherein the barrier is located at an end of the nozzle.

6. The hairdryer of claim 4, wherein the barrier is substantially orthogonal to the longitudinal axis of the nozzle.

7. The hairdryer of claim 4, wherein the barrier is inclined to the longitudinal axis of the nozzle.

8. The hairdryer of claim 1, wherein the primary fluid outlet is configured to emit the primary fluid flow into the fluid flow path, and wherein the nozzle comprises a first end which is insertable into the fluid flow path through the fluid outlet, and a second end remote from the first end, and wherein the nozzle fluid inlet is located between the first end and the second end of the nozzle.

9. The hairdryer of claim 8, wherein the nozzle fluid inlet comprises at least one aperture extending at least partially about the longitudinal axis of the nozzle.

10. The hairdryer of claim 8, wherein the nozzle fluid inlet comprises a plurality of apertures extending circumferentially about the longitudinal axis of the nozzle.

11. The hairdryer of claim 9, wherein the at least one aperture has a length extending in the direction of the longitudinal axis of the nozzle, and wherein the length of said at least one aperture varies about the longitudinal axis of the nozzle.

12. The hairdryer of claim 8, wherein the nozzle comprises a side wall between the first end and the second end of the nozzle, and wherein a portion of the side wall which is located between the first end and the second end of the nozzle at least partially defines the nozzle fluid inlet.

13. The hairdryer of claim 12, wherein the side wall is tubular in shape.

14. The hairdryer of claim 12, wherein the nozzle fluid inlet is formed in the side wall.

15. The hairdryer of claim 12, wherein the side wall extends about an inner wall, and wherein the nozzle fluid inlet is located between the walls of the nozzle.

16. The hairdryer of claim 15, wherein the inner wall is tubular in shape.

17. The hairdryer of claim 15, wherein the inner wall extends from the first end to the second end.

18. The hairdryer of claim 8, wherein the second end of the nozzle comprises the nozzle fluid outlet.

19. The hairdryer of claim 8, wherein the nozzle fluid outlet is located between the first end and the second end of the nozzle.

20. A nozzle for a hairdryer comprising a handle;

a body comprising a fluid outlet and a primary fluid outlet;

a fan unit for generating fluid flow through the hairdryer, a fluid flow path extending from a fluid inlet through which a fluid flow enters the hairdryer to the fluid outlet, and a primary fluid flow path extending from a primary fluid inlet through which a primary fluid flow enters the hairdryer to the primary fluid outlet, wherein the primary fluid flow path is separate from the fluid flow path; and

a heater for heating the primary fluid flow drawn through the primary fluid inlet;

wherein the nozzle is attachable to the body, the nozzle comprising a nozzle fluid inlet for receiving the primary fluid flow from the primary fluid outlet, and a nozzle fluid outlet for emitting the primary fluid flow, and wherein the nozzle is configured to at least partially block the emission of the fluid flow from the fluid outlet.